Railway-signal



(NoMoael.)

LW\.W. GARY., RAILWAY SIGNAL. l No. 257,819. r Patented May 9.11882.

l UNTTED STATES PATENT* rrrcn.

WESLEY w. GARY, on BOSTON, MASSACHUSETTS.

RAILWAY-SIGNAL.

SPECIFICATION forming part of Letters Iatent No. 257,819, dated May 9,1889. Application filed April 2l, 1881. (No model.)

To all whom it may concern: f

Be it known that I, WESLEY W. GARY, ot` Boston, in the county of Suffolkand State of Massachusetts, have invented certain VImprovements inRailway-Signals, ot' which the following is a specication.

This invention relates to magneto electric generators designed moreparticularly for use in connection with railway-signals, the gen eratorbeing adapted to be set in motion bythe passing train. w

. The object of my invention is to drive the generator by the train inapositive manner without the employment of the intermediate gearinghitherto required, andv this ,without subjecting` the apparatus toviolent ordangerous shocks or strains.`

To this end the invention consists primarily in the use of a rotarygenerator, arranged to he set in motion by the direct action ofthetrain, and free to continue its forward motion until its momentum isexhausted. y

Hithertoit has been attempted to drive rotary magneto-machines frompassingtrains by means ot' an intermediate train of gearing, by means ofwhich a high speed was to be iniparted tothe generator. ln practice,however, it has been found impossible to drive generators by the trainof gearing, the apparatus having been destroyed or rendered inoperativeby the shock ot' rapidlypassing trains in every instance in which itsuse has been attempted. Itis to overcome this difliculty, and at thesame time dispense with the costly gearing, that my invention isdesigned.

Referring to the accompanying drawings, Figure l represents aperspective view of my apparatus in its simplest form. Figs. 2 and 3 aredetailed views, illustrating two forms ofthe yielding sections at theouter ends of the main operating arms.

Referring to Fig. 1, A represents one rail of a railway-track; B, mygenerator or magnetomachine arranged by the side ot the track inposition to be acted upon by the train. The generator consists of afixed permanent magnet, a, and a .vertical shaft, b, provided withtheelectromagnets or induction-coils c, and with radial arms d, thelatter being arranged in such position that the trains in passing thegenerator willencounter the ends ofthe arms, and thereby impart to theshaft and its electromagnets c a rapid rotary or spinning motion.The'rotation ot' the electro-magnets in close proximity to the polls ofthe permanent magnet causes an induced current of electricityin thecoils of the electro-magnets inl the usual and well-known manner. Fromthe coils conneclions are made in the manner shown, oriu any otherordinary manner, for the transmission ofthe current to the conductors c,which will be extended to a signal or other apparatus to be operated. i

In order to prevent the arms dfroln striking violently against the sideof the train when the generator is in motion, their outer ends should bejointed or provided with spring-extensions, asindicated in the drawings,which will yield in a backward direction. 'lhe spring-extension of thearms will also serve the additional purpose of reducing the shock orjarwhich occurs as the arms are driven forward by the teilt in the backwarddirection, but permits the yielding motion to a limited extent only in aforward direction. The result is that trains moving backward will passby the spring-arm readily, while trains moving forward willcause thespring to move the main arm to which it is attached.

A spring-connection or buffer of any suitable character may beintroduced at any pointin the apparatus or applied to the train for thepurpose ot reducing the shock as the train acts upon the arms.

It will be noticed that the generator coni structed as above describedis capable ot' turn ing forward independently after being set in motionand until it is brought to a state of rest by natural causes, this modeof action being advantageous in that the motion ofthe generator and theoperation of the instrument connected therewith will continue for a.considerable length of time after the passage of the train. In order toincrease the length of time which the generator will continue in motion,it may be provided with a balance-wheel, as represented in the drawings,or its equivalent, by which the parts are given the required momentumwhen in motion.

While the forms of apparatus above repre-- sented are considered Athemost desirable for ordinary use, they may be modified to any extentdesired Without departing from the limits of my invention, provided theyare constructed without gearing and are such as to cause thetransmission of a positive rotation to the generator` from the train andpermit the generator to continue its forward rotation Withoutinterruption.

Any suitable spring or yielding medium may be employed to relieve the.parts from shock.

I do not claim herein, as any part ot' the present invention, theapplication ofa y-wheel or equivalent Weight applied to prolong themotion of a magneto-generator actuated from passing trains, as the samewill be made the subject ot' a separate application.

The form of generator herein represented I denominate a rotarygenerator, in order to distinguish the same from those generators inwhich one ofthe members has a vibratory motion with reference to theother, and which are commonly known in the art as vibratory generators.By the direct action ot' the train upon the generator, as herein stated,I mean an action by which the generator is driven scribedA and shown.

positively from the train as contradistinguished from those generatorsin which the train sets or adjusts for action a driving mechanism whichoperates the generators after the passage of the train.

Having thus described my invention, what I claim is- 1. In combinationwith a railway, a rotary magneto-generator and an arm which impartsmotion directly to said generator, said arm, constructed and arrangedsubstantially as described, to be operated directly by passing trains.

2. In combination with a rotary magnetogenerator, an operating-armapplied ,directly to the shaft or arbor ot its armature and arranged tobe driven by the direct action ot' passing trains.

3. In combination with a rotary magnetogenerator, a driving-arm applieddirectly to its shaft or arbor, said arm being constructed to yield in abackward direction without at'- fectin g the generator and arranged tobe operated by the direct action of passing trains.

4. In combination, with the magneto-generator and its operating-armsyarranged to be operated by passing trains, yielding sections applied tosaid arms and adapted to yield freely in one direction and to a limitedextent in the opposite direction, substantially as de- WESLEY W. GARY.Witnesses:

RoB'r. L. MILLER,

P. T. DODGE.

